DESCRIPTION

The Cdk viewer widget creates a file viewer widget. This widget
allows a user to interact with a file. It does NOT allow editing,
this is view only. The following are functions which create or
manipulate the Cdk viewer list widget.

AVAILABLE FUNCTIONS

activateCDKViewer
activates the viewer widget and lets the user interact with the
widget. The parameter viewer is a pointer to a non-NULL viewer
widget. If the actions parameter is passed with a non-NULL
value, the characters in the array will be injected into the
widget. To activate the widget interactively pass in a NULL
pointer for actions. If the character entered into this widget
is RETURN then this function will return a value from 0 to the
number of buttons -1, representing the button selected. It will
also set the widget data exitType to vNORMAL. If the character
entered into this widget was ESCAPE then the widget will return
a value of -1 and the widget data exitType will be set to
vESCAPE_HIT.
cleanCDKViewer
clears the information from the window.
destroyCDKViewer
removes the widget from the screen and frees memory the object
used.
drawCDKViewer
draws the viewer widget on the screen. If the box option is
true, the widget is drawn with a box.
eraseCDKViewer
removes the widget from the screen. This does NOT destroy the
widget.
getCDKViewerBox
returns true if the widget will be drawn with a box around it.
getCDKViewerHighlight
returns the attribute of the buttons.
getCDKViewerInfo
returns the contents of the viewer widget.
getCDKViewerInfoLine
returns true if the information line is on.
getCDKViewerTitle
returns the title of the widget.
moveCDKViewer
function moves the given widget to the given position. The
parameters xpos and ypos are the new position of the widget.
The parameter xpos may be an integer or one of the pre-defined
values TOP, BOTTOM, and CENTER. The parameter ypos may be an
integer or one of the pre-defined values LEFT, RIGHT, and CEN-TER. The parameter relative states whether the xpos/ypos pair
is a relative move or an absolute move. For example, if xpos =
1 and ypos = 2 and relative = TRUE, then the widget would move
one row down and two columns right. If the value of relative
was FALSE then the widget would move to the position (1,2). Do
not use the values TOP, BOTTOM, LEFT, RIGHT, or CENTER when rel-ative = TRUE. (weird things may happen). The final parameter
refresh is a boolean value which states whether the widget will
get refreshed after the move.
*newCDKViewer
function creates a viewer widget and returns a pointer to it.
Parameters:
screen
is the screen you wish this widget to be placed in.
xpos controls the placement of the object along the horizontal
axis. It may be an integer or one of the pre-defined val-
ues LEFT, RIGHT, and CENTER.
ypos controls the placement of the object along the vertical
axis. It may be an integer or one of the pre-defined val-
ues TOP, BOTTOM, and CENTER.
height and
width
are the height and width of the viewer window.
buttons
is an array of the button labels which are to be attached
to the viewer on the bottom.
buttonCount
is the number of buttons in buttons.
buttonHighlight
is the highlight attribute of the currently selected but-
ton.
box is true if the widget should be drawn with a box around it.
shadow
turns the shadow on or off around this widget.
If the widget could not be created then a NULL pointer is
returned.
positionCDKViewer
allows the user to move the widget around the screen via the
cursor/keypad keys. See cdk_position(3) for key bindings.
setCDKViewer
lets the programmer modify several elements of an existing
viewer widget. The parameter title is the title to be displayed
on the top of the viewer.
The parameter list is the information to display, while listSize
states how many rows there are in the list array. If listSize
is negative, list is scanned to find its length, including files
which will be included via embedded links.
The parameter buttonAttribute states the attribute of the cur-
rent highlighted button. The boolean parameter interpret tells
the viewer to interpret the contents of list for Cdk display
command. The showLineInfo boolean flag tells the viewer to show
to show the line number and percentage in the top left corner of
the viewer window. The parameters box and shadow are the same
as in the function description of newCDKViewer.
setCDKViewerBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKViewerBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. See cdk_display(3).
setCDKViewerBox
sets whether the widget will be drawn with a box around it.
setCDKViewerBoxAttribute
sets the attribute of the box.
setCDKViewerHighlight
sets the highlight attribute of the buttons on the widget.
setCDKViewerHorizontalChar
sets the horizontal drawing character for the box to the given
character.
setCDKViewerInfo
sets the contents of the viewer widget. See setCDKViewer for
parameter descriptions.
setCDKViewerInfoLine
turns on/off the information line in the top left hand corner of
the widget. If the value of showInfoLine is TRUE, the informa-
tion line will be displayed. If it is FALSE it won't.
setCDKViewerLLChar
sets the lower left hand corner of the widget's box to the given
character.
setCDKViewerLRChar
sets the lower right hand corner of the widget's box to the
given character.
setCDKViewerTitle
sets the title of the widget.
setCDKViewerULChar
sets the upper left hand corner of the widget's box to the given
character.
setCDKViewerURChar
sets the upper right hand corner of the widget's box to the
given character.
setCDKViewerVerticalChar
sets the vertical drawing character for the box to the given
character.

KEY BINDINGS

When the widget is activated there are several default key bindings
which will help the user enter or manipulate the information quickly.
The following table outlines the keys and their actions for this wid-
get.
+-----------------------------------------------------------+
|KeyAction |
+-----------------------------------------------------------+
|Left Arrow Shifts the viewport one column left. |
|Right Arrow Shifts the viewport one column left |
|Up Arrow Scrolls the viewport one line up. |
|Down Arrow Scrolls the viewport one line down. |
+-----------------------------------------------------------+
|Prev Page |
|Ctrl-B |
|B |
|b Scroll one page backward. |
+-----------------------------------------------------------+
|Next Page |
|Ctrl-F |
|Space |
|F |
|f Scroll one page forward. |
+-----------------------------------------------------------+
|Home |
|| Shift the whole list to the far left. |
+-----------------------------------------------------------+
|End |
|$ Shift the whole list to the far right. |
+-----------------------------------------------------------+
|1 |
|< |
|g Moves to the first line in the viewer. |
+-----------------------------------------------------------+
|> |
|G Moves to the last line in the viewer. |
+-----------------------------------------------------------+
|L Moves half the distance to the end of |
| the viewer. |
|l Moves half the distance to the top of |
| the viewer. |
+-----------------------------------------------------------+
|? Searches up for a pattern. |
|/ Searches down for a pattern. |
|n Repeats last search. |
|N Repeats last search, reversed direction. |
|: Jumps to a given line. |
+-----------------------------------------------------------+
|i Displays file statistics. |
|s Displays file statistics. |
+-----------------------------------------------------------+
|Tab Switches buttons. |
|Return Exit the widget and return the index of |
| the selected button. Set the widget |
| data exitType to vNORMAL. |
|Escape Exit the widget and return -1. Set the |
| widget data exitType to vESCAPE_HIT. |
|Ctrl-L Refreshes the screen. |
+-----------------------------------------------------------+